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PERKEMBANGAN PEMANFAATAN PLTS DI DKI JAKARTA MENUJU TARGET 13,8 MW TAHUN 2025 Simon Junior; I Nyoman Satya Kumara; Ida Ayu Dwi Giriantari
Jurnal SPEKTRUM Vol 9 No 1 (2022): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (362.614 KB) | DOI: 10.24843/SPEKTRUM.2022.v09.i01.p8

Abstract

PLTS is one of the solutions to produce electrical energy that can save electricity payment ratesand has a good impact on the surrounding environment. This study aims to analyze the development ofPLTS utilization in DKI Jakarta, types and total PLTS found in DKI Jakarta. This research was conductedby collecting data from journals, articles and news on the internet in the form of PLTS data in DKI Jakarta,type and capacity of PLTS, year of operation, location, ownership status and institutions that built PLTS.Then from the data, a review is carried out regarding the number, location, and total capacity of the PLTSbuilt every year, the results of this study are the number of PLTS in DKI Jakarta is 124 units with a totalcapacity of 11,088 kWp, with rooftop PLTS totaling 119 PLTS units. with a capacity of 10,29 MW andPLTS Ground-mount as many as 5 units with a PLTS capacity of 0,8 MW. The PLTS development in DKIJakarta has met the RUEN target of 73% to reach the 13.8 MW target in 2025.
Natural Deys from Fruit Waste as a Sensitizer for Dye Sensitized Solar Cell (DSSC) I Nyoman Setiawan; Ida Ayu Dwi Giriantari; Wayan Gede Ariastina; Ida Bagus Alit Swamardika; Agus Selamet Duniaji; Nyoman Satya Kumara
Journal of Electrical, Electronics and Informatics Vol 1 No 1 (2017): JEEI (February 2017)
Publisher : Institute for Research and Community Services Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JEEI.2017.v01.i01.p06

Abstract

Dye-sensitized solar cell (DSSC) is one of the potential candidates for the next generation solar cells. One of the most attractive features of the DSSC is the low production costs. The utilization of natural dyes is a new area for investigation due to their unique capability to absorb photons from natural sunlight or artificial light and convert it into electric current. The purpose of this study is to determine the potential of natural dye from red dragon fruit waste as a dye sensitizer. Red dragon fruit peel is initially extracted using methanol and the solution absorption spectra then is characterized using UV-Vis spectrophotometer. The absorption spectra is measured within a wavelength range of 400-800 nm. The characterization results show that the maximum absorption spectrum is at a wavelength of 446 nm. The natural dye solution then is used to immerse Fluorine Tin Oxide (FTO) coated with titanium dioxide (TiO2). The glass FTO is immersed in the dye solution for 24 hours. DSSC then is prepared by sandwiching the working electrode and counter electrode. An electrolyte solution is used to fill the interface between the two electrodes. The current and voltage (I-V) characteristics of DSSC is finally measured using amperemeter and voltmeter. The results indicated that the natural dye from the peel of red dragon fruit has potential as a dye sensitizer. Further research is still required to improve the performance of the DSSC.
Stemming Algorithm for Indonesian Digital News Text Processing Putu Manik Prihatini; IKG Darma Putra; IAD Giriantari; M Sudarma
International Journal of Engineering and Emerging Technology Vol 2 No 2 (2017): July - December
Publisher : Doctorate Program of Engineering Science, Faculty of Engineering, Udayana University

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Abstract

Stemming is the process of finding the basic word of a word in the text. The stemming algorithm built by Nazief-Adriani is the best stemming algorithm for Indonesian, and has been refined by Asian Jelita. However, references related to the Nazief-Adriani stemming algorithm are still difficult to find given that the algorithm is an internal publication. Therefore, in this study, will be built stemming algorithm for Indonesian news digital text based on the stemming algorithm Nazief-Adriani and Jelita Asian. The evaluation in this study was done before and after the addition of rules and more complete basic word dictionary. Both evaluations were performed by calculating Precision, Recall and F-Measure values between automatic and manual stemming results. Preliminary tests of the stemming algorithm Nazief-Adriani and Jelita Asian found some new basic words, abbreviations, entities and foreign terms that appear common in the news text but have not stored in the basic word dictionary. Furthermore, there are some unrecognized affixed words in defined rules. The addition of basic words, abbreviations, entities and foreign terms to the basic word dictionary, along with the addition of rules can improve the performance of the stemming algorithm built on this study. Thus, the completeness basic word dictionary and the accuracy of rules play a very important role in the success of an automatic stemming algorithm.
Stemming Algorithm for Indonesian Signaling Systems (SIBI) Risky Aswi Ramadhani; I Ketut Gede Darma Putra; Made Sudarma; Ida Ayu Dwi Giriantari
International Journal of Engineering and Emerging Technology Vol 5 No 1 (2020): January - June
Publisher : Doctorate Program of Engineering Science, Faculty of Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/IJEET.2020.v05.i01.p11

Abstract

The Indonesian Language Sign System (SIBI) is a medium used by deaf people to communicate with the wider community. SIBI is Indonesian that is presented by hand. The sentence structure (morphology) of SIBI is the same as the Indonesian language, SIBI also recognizes the prefix, principal and suffix sign word. This research discusses how to make stemming for SIBI, the algorithm used for stemming is Nazief Adiri. Stemming for SIBI separates input sentences, words through the Text Processing process. Then the word in Stemming so that it can be separated into prefix, main, and suffix words. After stemming, the words obtained in indexing can find the right SIBI, by using ID. Good stemming must pay attention to Indonesian Morphology. The number of words used for this stemming trial is 50 words. By using the Confusion Matrix method found 0.94% accuracy, 93% recall, and 84% precision.
Speed Control Strategy for Three Phase Induction Machine Fed Inverter Base on Carrier Base Pulse Width Modulation (CBPWM) I Ketut Wiryajati; A.D Giriantari; Lie Jasa; I N. S. Kumara
International Journal of Engineering and Emerging Technology Vol 5 No 1 (2020): January - June
Publisher : Doctorate Program of Engineering Science, Faculty of Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/IJEET.2020.v05.i01.p05

Abstract

Abstract— An induction motors (IM) in many industries is used because it has several advantages, such as a very simple and strong construction, the price is relatively cheap, has good efficiency, power factor is quite good, and maintenance is easier. Besides the advantages of induction motors also have disadvantages, one disadvantage of induction motors is not being able to maintain a constant speed when there is a change in load. If the load changes, the speed of the induction motor will decrease. One method of regulating the speed of an induction motor presented in this study is the regulation of an induction motor using a carrier based PWM (CBPWM) inverter with the field oriented control (FOC) technique. The estimation of rotor rotation, torque and flux is done by carrier- based PWM technique which is given input voltage and stator current. To achieve the desired flux and torque, estimation is used as feedback in the control system. In this study, it will be simulated the induction motor speed regulation with a carrier base-based inverter using Matlab. The results obtained through simulation show the length of time to reach the reference speed for speeds of 1500 rpm and 1450 rpm is around 0.45 seconds. And THD average 2,675%.
Effect of Solvents on Natural Dyes Extraction from Mangosteen Waste for Dye Sensitized Solar Cell Application I Nyoman Setiawan; Ida Ayu Dwi Giriantari; Wayan Gede Ariastina; Ida Bagus Alit Swamardika
International Journal of Engineering and Emerging Technology Vol 3 No 2 (2018): July - December
Publisher : Doctorate Program of Engineering Science, Faculty of Engineering, Udayana University

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Abstract

Natural dyes are economically and environmentally superior to ruthenium-based dyes because they are cheap and non-toxic. In this study, natural dyes were extracted from mangosteen peel waste. Color extraction was carried out with three types of solvents (distilled water, methanol and ethanol) which had been acidified with 10% citric acid and with a ratio of material: solvent (1: 4, 1: 6, 1: 8 w / v). The photochemical properties are studied by UV-Vis spectrophotometer and FTIR spectroscopy. The absorption peak of the three types of solvent occurs at different wavelengths. The presence of carbonyl (C = O) and hydroxyl (OH) groups contained in anthocyanins can attach coloring to the surface of TiO2. Ethanol solvents with a ratio of 1: 8 produce the lowest photon energy at wavelength and absorption coefficient of 539.00 nm and 2,008 km-1 respectively. The lowest band gap of the dye helps electrons move rapidly from the valence band to the conduction band and only requires less energy for electron recombination which will increase the performance of the DSSC.
Solar PV Plant as a Replacement for Power Supply of Irrigation Water Pump I Made Agus Sastradiangga; Ida Ayu Dwi Giriantari; I Wayan Sukerayasa
International Journal of Engineering and Emerging Technology Vol 5 No 2 (2020): July - December
Publisher : Doctorate Program of Engineering Science, Faculty of Engineering, Udayana University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/IJEET.2020.v05.i02.p23

Abstract

The southern side of Subak Babakan Yeh Kuning has an agricultural irrigation water shortage due to the dry season’s drought. In 2016, the Ministry of Public Works and Public Housing resolved that by giving diesel-powered irrigation water pump system and groundwater irrigation network, however the high operations cost resulted an abandonment of it. This study conducted a solar power plant design for submersible pumps at the southern side of Subak Babakan Yeh Kuning by calculating the amount of irrigation water needed, designing the solar power plant and the investment costs, and comparing the operations cost between the new and old system. Based on the design, the capacity of the solar power plant was set at 12,54 kWp using 33 solar module units and a 18,5 kW inverter unit. The pump could operate for 5 hours and 30 minutes on a sunny weather with a water discharge of 253 m3 or fulfill 17,5% of water needs for an area of 16-hectare. The investment costs of the solar power plant pump system were IDR 171.193.500. The operations cost of the new system (solar-powered) per hectare was IDR 6.495/day. Meanwhile, the operations cost of the old system (diesel-powered) per hectare was IDR 15.950/day.
STUDI POLA PENGELOLAAN ENERGI BIOGAS SEBAGAI ENERGI ALTERNATIF PADA KELOMPOK TERNAK DI DESA TUNJUK TABANAN I Wayan Raka Ardana; I.A.D Giriantari; Rukmi Sari Hartati
Logic : Jurnal Rancang Bangun dan Teknologi Vol 13 No 1 (2013): March
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) Politeknik Negeri Bali

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Abstract

Teknologi biogas merupakan teknologi yang digunakan untuk mengolah limbah organik menjadi sumber energi terbarukan dalam bentuk gas bio. Gas bio dihasilkan dengan proses perombakan dan fermentasi bahan-bahan organik seperti kotoran ternak oleh mikroorganisme di dalam ruang kedap udara (digester). Biogas layak digunakan sebagai energi alternatif untuk memenuhi kebutuhan energi dalam kehidupan sehari-hari seperti energi panas untuk memasak, dan energi listrik. Kajian terhadap pengelolaan potensi biogas di Desa Tunjuk Tabanan dihasilkan biogas sebesar 40.644 m3/tahun dan Program Simantri 10 m3 per hari, dan pupuk organik padat 40 kg/hari, cair 20 lt/hari. Secara ekonomis berdampak pada pendapatan kelompok ternak per hari Rp. 97.600,- . Dari hasil analisis SWOT kelompok ternak program Simantri diperoleh alternatif strategi dan rancangan mekanisme untuk mengembangkan pengelolaan sistem biogas adalah : membenahi struktur organisasi dan pengelola, meningkatkan kualifikasi dan kinerja pengelola, meningkatkan sosialisasi dan permodalan, kerjasama dengan pihak lain.
ANALISIS SISTEM KELISTRIKAN PADA PEMBANGKIT LISTRIK TENAGA SURYA ON-GRID KAPASITAS 25 KWP DI BADAN PERENCANAAN PEMBANGUNAN DAERAH (BAPPEDA) PROVINSI BALI I Kadek Juniarta; I Nyoman Setiawan; Ida Ayu Dwi Giriantari
Jurnal SPEKTRUM Vol 9 No 1 (2022): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (697.08 KB) | DOI: 10.24843/SPEKTRUM.2022.v09.i01.p13

Abstract

In the 2020 fiscal year, the Ministry of Energy and Mineral Resources of the Republic ofIndonesia provided PLTS On-Grid grants to the Province of Bali as many as 10 PLTS locationsin Denpasar City. One of them is in the Regional Development Planning Agency (BAPPEDA) ofBali Province with an installed capacity of 25 kWp which is connected to the PLN network.BAPPEDA Bali is an example of the NRE Development Program and the Regional Medium-Term Development (RPJMD) that supports the PV mini-grid sector. This research wasconducted to determine the performance of the PLTS electrical system and to simulate theresults of PLTS production using Helioscope software so that it can compare the simulationresults of 2 scenarios with real conditions to determine the level of effectiveness in savingelectricity bills and the factors that influence the results of PLTS energy production. The resultsshowed that the potential for electrical energy generated for a year from the simulation ofScenario 1 and Scenario 2 was 38.90MWh and 39.07MWh. It is known that the real energyproduction from July to December 2021 is 18,083 kWh with the simulation results of scenario 1and scenario 2 from July to December 2021 which are 19,810 kWh and 20,015 kWh. Thedifference between real energy production and the simulation results in scenario 1 and scenario2 is 1,727kWh with a percentage of 8.72%, and 1,931kWh with a percentage of 9.65%. Thepercentage of savings obtained for 6 months in 2021 compared to 6 months in 2020 is 56.42%with a saving value of Rp. 18,783,953.
PEMANFAATAN PLTS 10 kWp TERPASANG UNTUK CATU DAYA POMPA AIR DI DESA BAN KARANGASEM Awgustus Patandean; I A Dwi Giriantari; Wayan Gede Ariastina
Jurnal SPEKTRUM Vol 9 No 2 (2022): Jurnal SPEKTRUM
Publisher : Program Studi Teknik Elektro UNUD

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (450.132 KB) | DOI: 10.24843/SPEKTRUM.2022.v09.i02.p4

Abstract

There are 19 banjars considered as custom And 16 official banjars at Ban Village located in the Regency of Karangasem Bali. The people in Ban, especially who live at the village of Tempek Asti and the village of Manik Aji, have troubles to get the ccess of fresh water. As the result, they must take a longdistance walk and the condition is teribly dangerous. The village of Manik Aji has off-grid system powered by PLTS 10 kWp which was built in 2017 by the minister of source and energy of Indonesian Republic. It had done by Manpower Department and ESDM of Bali Province. In 2021, PLN (Indonesian Electric state) had designed to supply the electricity at Manik Aji village. Therefore,the installed PLTS was functioned as the source of electric support to fulfill the society's needs of tempek Asti Manik aji village. The water pump type is AC submersible Kepeida 4SMP3 26-2,2 kWp and 2.093,14 Wh of energy. The total head is 60,005 meter which the power needed 2,2 kWp and 2.093,14 Wh of energy so the water pump can operate for 3,5 hours with the water debit is 3 m3/h producing 10.000 litter of water and has fulfilled the water needs of society at tempek Asti Manik Aji village about 1.200 litter daily.
Co-Authors Aditya Perdana Putra Purnomo Agus Ryzky Martha, Gede Agus Selamet Duniaji Ananta Mahanata, I Gusti Putu Ariastina, WG Awgustus Patandean Ayu Anggasari, Ni Luh Bagas Maruli Pangaribuan Baskara Formasakti Bhuana, I.G.A.T. C. G. Indra Partha Caesar, B Cecep Yudhie Rachmat Derren, M. Dewa Made Wiharta Dewa Nyoman Tri Budiantara Dewa Putu Ari Laksana Diva Aristia, Gusti Bagus Duman Care Khrisne Gallant Pradika Gede Agus Ryzky Martha H. Kristiawan Harahap, RS I G.N.A.B Rama Wahyu Dewangga I Gde Antha Kasmawan I Gde Ari Biantara I Gede Agus Januar Ariawan I Gede Civavisna Brahma I GN Dion Adiputra I Gusti Made Ngurah Desnanjaya I Gusti Ngurah Adhy Pradhana I Gusti Ngurah Winanda Wijaksana I Gusti Putu Mastawan Eka Putra I Kadek Adi Darmadi I Kadek Adi Febriana Putra I Kadek Juniarta I ketut Gede Darma Putra I Ketut Jati I Ketut Wiryajati I Komang Ogik Parmana Putra I Komang Widi Astawa I Made Aditya Nugraha I Made Agus Sastradiangga I Made Anom Sutrisna Wijaya I Made Dwi Ardiada I Made Sankhya Pranata Adiguna I MADE SUDARMA I Made Wahyu Darmahesta I N Satya Kumara I Nengah Widiana I NS Kumara I Nyoman Budiastra I Nyoman Cita Artawa I Nyoman Setiawan I Nyoman Setiawan I NYOMAN WIJAYA I Putu Adi Pradnyana Wibawa I Putu Andithya Chrisna Budi I Putu Arsikaputra I Putu Eka April Yanto I Putu Putrayana Wardana I W A WINARTA I Wayan Ambarayana I Wayan Arta Wijaya I Wayan Raka Ardana I Wayan Sukerayasa I Wayan Sukerayasa I Wayan Supartha I. K. G. D. Putra I. N. S. Kumara I. P. Krisna Darma Putra I. W. Sukerayasa, I. W. I.G.A.B. Adiputra I.G.A.D. Sasmita I.N.S. Kumara I.N.S. Kumara, I.N.S. I.W. Sukerayasa, I.W. I.W.G.A Anggara Ida Bagus A. Swamardika Ida Bagus Ketut Sugirianta IGA Andita Putra IGA Sri Melati Intan Aprilia Medina Intan Aprilia Medina Junivan Junivan Kadek Agus Nata Riadnyana Kadek Dwi Damarian Kavlin Rafhel Panjaitan Kenny Angel Manik komang jaryanta aryamantara Kumara, I. N. S. Laili Asdiyan Salsabila Ayu Leba, G. I. M. Lie Jasa Linawati Linawati Linawati Linawati Luh Ria Atmarani M Sudarma M. Sudarma M.R. Wicaksana Made Aryawan Made Sudarma Made Sudarma Made Sumantera mahadi putra Marcelinus Anggiat Situmorang Margareta Yuniari Michael Candra Santoso N. A. Kartono Nadhif Dewayana, Zevardy Natapathy, Ranga Bayu NEVIATY PUTRI ZAMANI Ngakan Satria Utama Ngurah Indra ER Ni Made Neli Lestari Ni Made Wartini Norberto Soares Oya Iman Sanjaya P. M. Prihatini P.A. Sujana Partogi Manalu, Eli Musa Reja Poppy Diana Sari Pranipata, IND Purna Suartawan, Gede Putu Manik Prihatini Richard Antony Suatan Risky Aswi R, Risky Rukmi Sari Hartati Setiawan, I N. Setiawan, I.N. Setiawan, IN Setiawan, Putu Ayu Citra Simon Junior Sinaga, P. M. Sugirianta, Ida Bagus Ketut Sukerayasa, IW Suriana, I Wayan Swamardika, IB. Alit Tjok Gede Indra Partha Virgunia, D. A. W.G. Ariastina Wahyudi Ernest Putra Wayan Gede Ariastina Wayan Gede Ariastina Widiandika Putra, I Wayan Dicky Wira Dharma, Gede Agus Yohanes Made Arie Prawira Yudha Anggara Putra Yusuf Firmansyah, Ahmad